Redesign pantry horizon controls

js/services/planIngredients.js

@@ -1,7 +1,7 @@
 import { INGREDIENTS, RECIPES, PRODUCTS, getProductsForIngredient } from '../data/catalog.js?v=8';
 import { MEAL_SLOTS } from '../planner/mealSlots.js';
 import { addDays } from './dateUtils.js';
-import { getDayPlan } from './planStore.js?v=2';
+import { dateKey, getDayPlan } from './planStore.js?v=2';
 import { getPantryTotal } from './pantryShopping.js?v=2';
 
 export function dayHasAnyMeal(plans, d) {
@@ -182,6 +182,42 @@ export function aggregateWeekIngredientNeed(plans, weekStart) {
     return mergeIngredientLines(all);
 }
 
+/**
+ * Zapotrzebowanie składników od startDate przez numDays dni.
+ * Jak aggregateWeekIngredientNeed, ale z dowolnym zakresem i informacją
+ * w które dni dany składnik jest potrzebny.
+ * @param {Record<string, unknown>} plans
+ * @param {Date} startDate
+ * @param {number} numDays
+ * @returns {Array<{ingredientId: string, name: string, category: string, amount: number, unit: string, days: string[]}>}
+ */
+export function aggregateRangeIngredientNeed(plans, startDate, numDays) {
+    /** @type {Map<string, {ingredientId: string, name: string, category: string, amount: number, unit: string, days: Set<string>}>} */
+    const map = new Map();
+    for (let i = 0; i < numDays; i++) {
+        const day = addDays(startDate, i);
+        const dk = dateKey(day);
+        const dayPlan = getDayPlan(plans, day);
+        const lines = flattenDayIngredientLines(dayPlan);
+        for (const line of lines) {
+            const key = `${line.ingredientId}\t${line.unit}`;
+            const cur = map.get(key);
+            if (!cur) {
+                map.set(key, { ...line, days: new Set([dk]) });
+            } else {
+                cur.amount = Math.round((cur.amount + line.amount) * 10) / 10;
+                cur.days.add(dk);
+            }
+        }
+    }
+    return [...map.values()]
+        .map((item) => ({ ...item, days: [...item.days].sort() }))
+        .sort((a, b) => {
+            const c = a.category.localeCompare(b.category);
+            return c !== 0 ? c : a.name.localeCompare(b.name, 'pl');
+        });
+}
+
 /**
  * Jedna grupa na porę dnia: nagłówek pory raz, potem bloki przepisów ze składnikami.
  */